From: William Lee Irwin III <wli@holomorphy.com>
To: David Chow <davidchow@shaolinmicro.com>
Cc: linux-mm@kvack.org
Subject: Re: Big memory, no struct page allocation
Date: Sun, 23 Jun 2002 01:59:14 -0700 [thread overview]
Message-ID: <20020623085914.GN25360@holomorphy.com> (raw)
In-Reply-To: <3D158D1E.1090802@shaolinmicro.com>
On Sun, Jun 23, 2002 at 04:55:58PM +0800, David Chow wrote:
> Hi, I've got a silly but serious question. I want to allocate a large
> buffer (>512MB) in kernel. Normally you use __get_free_page and handle
> it with page pointers. But when get to very large (say 1024MB), I will
> need to use 2 level of page pointer indirection to carry the page
> pointer array. I also find the total size of page struct is quite large
> when using lots of pages, what I want is to use memory pages without
> struct page, is this possible? By the way, can I use lots of memory in
> the kernel, something like 1GB of memory allocation when physically RAM
> available? Please give advise. Thanks.
Try allocating it at boot-time with the bootmem allocator.
Cheers,
Bill
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next prev parent reply other threads:[~2002-06-23 8:59 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-23 8:55 David Chow
2002-06-23 8:59 ` William Lee Irwin III [this message]
2002-06-23 15:31 ` David Chow
2002-06-27 1:38 ` William Lee Irwin III
2002-06-30 18:38 ` David Chow
2002-07-01 17:48 ` Rik van Riel
2002-07-02 6:06 ` William Lee Irwin III
2002-07-03 16:16 ` David Chow
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